Detection device and processing apparatus

Abstract

According to one embodiment, a detection device includes a substrate, a light detector, a light emitter. The substrate is light-transmissive. The light emitter is provided between the substrate and the light detector. The light emitter includes a first electrode, a light-emitting layer, and a plurality of second electrodes. The first electrode is provided between the light detector and the substrate. The first electrode is light-transmissive. The light-emitting layer is provided between the light detector and the first electrode. The second electrodes are provided between the light detector and the light-emitting layer.

What is claimed is: 
     
         1 . A detection device, comprising:
 a substrate, the substrate being light-transmissive;   a light detector; and   a light emitter provided between the substrate and the light detector, the light emitter including
 a first electrode provided between the light detector and the substrate, the first electrode being light-transmissive, 
 a light-emitting layer provided between the light detector and the first electrode, and 
 a plurality of second electrodes provided between the light detector and the light-emitting layer. 
   
     
     
         2 . The device according to  claim 1 , wherein the plurality of second electrodes is arranged in a second direction perpendicular to a first direction, the first direction being from the substrate toward the light detector. 
     
     
         3 . The device according to  claim 2 , wherein a length in a third direction of the second electrode is longer than a length in the second direction of the second electrode, the third direction being perpendicular to the first direction and the second direction. 
     
     
         4 . The device according to  claim 1 , wherein a reflectance of the second electrode is higher than a reflectance of the first electrode. 
     
     
         5 . The device according to  claim 1 , wherein the light-emitting layer includes an organic substance. 
     
     
         6 . The device according to  claim 1 , wherein
 the light detector includes:
 a third electrode; 
 a fourth electrode provided between the light emitter and the third electrode, the fourth electrode being light-transmissive; and 
 a photoelectric conversion layer provided between the third electrode and the fourth electrode. 
   
     
     
         7 . The device according to  claim 6 , wherein a portion of the fourth electrode is provided between the second electrodes in a second direction perpendicular to a first direction, the first direction being from the substrate toward the light detector. 
     
     
         8 . The device according to  claim 6 , wherein an injection barrier between the fourth electrode and the light-emitting layer is larger than an injection barrier between the second electrode and the light-emitting layer. 
     
     
         9 . The device according to  claim 1 , further comprising a carrier injection layer,
 at least a portion of the carrier injection layer being provided between the light-emitting layer and at least one of the plurality of second electrodes.   
     
     
         10 . The device according to  claim 1 , further comprising a sealing portion,
 the light-emitting layer being provided between a portion of the sealing portion and a portion of the substrate in the first direction,   the light-emitting layer being surrounded with the sealing portion along a plane perpendicular to the first direction.   
     
     
         11 . A detection device, comprising:
 a substrate;   a first electrode, the first electrode being light-transmissive;   a light detector provided between the substrate and the first electrode;   a light-emitting layer provided between the light detector and the first electrode; and   a plurality of second electrodes provided between the light detector and the light-emitting layer.   
     
     
         12 . The device according to  claim 11 , wherein the plurality of second electrodes is arranged in a second direction perpendicular to a first direction, the first direction being from the substrate toward the light detector. 
     
     
         13 . The device according to  claim 12 , wherein a length in a third direction of the second electrode is longer than a length in the second direction of the second electrode, the third direction being perpendicular to the first direction and the second direction. 
     
     
         14 . The device according to  claim 11 , wherein
 the light detector includes:
 a third electrode; 
 a fourth electrode provided between the first electrode and the third electrode, the fourth electrode being light-transmissive; and 
 a photoelectric conversion layer provided between the third electrode and the fourth electrode. 
   
     
     
         15 . The device according to  claim 14 , wherein an injection barrier between the fourth electrode and the light-emitting layer is larger than an injection barrier between the second electrode and the light-emitting layer. 
     
     
         16 . The device according to  claim 11 , further comprising a carrier injection layer,
 at least a portion of the carrier injection layer being provided between the light-emitting layer and at least one of the plurality of second electrodes.   
     
     
         17 . A detection device, comprising:
 a substrate, the substrate being light-transmissive;   a light detector; and   a light emitter provided between the substrate and the light detector, the light emitter including
 a first electrode provided between the light detector and the substrate, the first electrode being light-transmissive, 
 a light-emitting layer provided between the light detector and the first electrode, and 
 a second electrode provided between a portion of the light detector and a portion of the light-emitting layer, 
   the second electrode including a plurality of first portions provided to be separated from each other.   
     
     
         18 . The device according to  claim 17 , wherein the plurality of first portions is arranged in a second direction perpendicular to a first direction, the first direction being from the substrate toward the light detector. 
     
     
         19 . The device according to  claim 17 , wherein
 the light detector includes:
 a third electrode; 
 a fourth electrode provided between the light emitter and the third electrode, the fourth electrode being light-transmissive; and 
 a photoelectric conversion layer provided between the third electrode and the fourth electrode. 
   
     
     
         20 . A processing apparatus, comprising:
 the detection device according to  claim 1 ; and   a processor receiving and processing a signal detected by the detection device.